Hello, so I've had this issue on my old hard drive (would go to 100% randomly/downloading or not) so I went out and bought myself a 240GB SSD for windows and a blue WD 2TB hard drive for steam games and I've been having this issue with the hard drive spiking straight to 100% when downloading a game and it causes the download to stop until the hard drive lowers down to 99% and repeats itself.
https://www.youtube.com/watch?v=I62Jn4fp3Jw&feature=youtu.be
I've quickly recorded an example of what happens during downloading something via Steam.
https://www.youtube.com/watch?v=I62Jn4fp3Jw&feature=youtu.be
I've quickly recorded an example of what happens during downloading something via Steam.